We apply Bogolubov quasi-averages approach to QCD with two light quarks
to demonstrate a spontaneous generation of an effective interaction,
leading to the Nambu -- Jona-Lazinio model.
The resulting theory contain two parameters: average low-energy
value of $\\alpha_s$ and initial light quark mass $m_0$.
All other low-energy
parameters: the pion decay constant, the constituent quark
mass, the quark condensate, mass of the
$\\pi$-meson, mass of the $\\sigma$-meson and its width
are expressed in terms of the two
initial parameters in satisfactory correspondence to
experimental phenomenology.
Event dates: Wednesday, 22 February, 2006 - 14:00
Event:
Reports:
Bogolubov quasi-averages in low-energy QCD.
Place: Россия, Москва, микрорайон Ленинские Горы, 1с58 (корпус высоких энергий), комната 3-24
Web-page: http://theory.sinp.msu.ru/dokuwiki/doku.php?id=seminars:seminars
Scientific adviser:
Secretar: Baikov Pavel Anatol'evich
Structure units: